CN215897601U - Intensive valve hall suitable for large-capacity single-phase three-winding converter transformer - Google Patents
Intensive valve hall suitable for large-capacity single-phase three-winding converter transformer Download PDFInfo
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- CN215897601U CN215897601U CN202121945976.8U CN202121945976U CN215897601U CN 215897601 U CN215897601 U CN 215897601U CN 202121945976 U CN202121945976 U CN 202121945976U CN 215897601 U CN215897601 U CN 215897601U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Abstract
The utility model discloses an intensive valve hall suitable for a large-capacity single-phase three-winding converter transformer, which comprises a first converter transformer, a second converter transformer, a third converter transformer, a first valve tower, a second valve tower and a third valve tower, wherein the first valve tower, the second valve tower and the third valve tower are positioned in a rectangular valve hall and are equidistantly distributed along the long side direction of the valve hall, the first converter transformer, the second converter transformer and the third converter transformer are distributed outside one long side of the valve hall and respectively correspond to the first valve tower, the second valve tower and the third valve tower, the first converter transformer, the second converter transformer and the third converter transformer are respectively inserted into the valve hall through valve side sleeves and are respectively connected with the first valve tower, the second valve tower and the third valve tower, the first converter transformer, the second converter transformer and the third converter transformer are all single-phase three-winding transformers, the first valve tower, the second valve tower and the third valve tower are all suspension type quadruple valves.
Description
Technical Field
The utility model relates to the technical field of power transmission engineering, in particular to an intensive valve hall suitable for high-capacity single-phase three-winding converter transformers.
Background
The valve hall is the core of the converter station, the arrangement scheme of the valve hall needs to be combined with the comprehensive consideration of the converter valves and the converter transformer type, the reasonable arrangement scheme of the valve hall can ensure the safe and reliable operation of the direct current system under the preset external environment and system conditions, and meet the requirements of convenient installation and maintenance, low investment and the like, for the converter station with high voltage and large capacity, the converter valves mostly adopt a suspended double valve or quadruple valve structure, the converter transformer mostly adopts a single-phase double winding structure type, the arrangement scheme of the current single-phase double winding and the quadruple valve is already applied in a plurality of direct current projects, the scheme of the valve hall has the defects that the converter variable quantity is large, 12 working converter transformers and 2 standby converter transformers need to be configured in a total station, each converter transformer is configured with 1 grounding switch, the equipment cost is high, the floor area is large, the size of each pole valve hall is 54.7 multiplied by 24 multiplied by 18m (length multiplied by width by net height), for converter stations with tight land, it is difficult to implement, and a more compact and intensive valve hall arrangement is sought.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is: the intensive valve hall has the advantages of small occupied area, low equipment cost and suitability for large-capacity single-phase three-winding converter transformers.
In order to solve the technical problem, the utility model provides an intensive valve hall suitable for a large-capacity single-phase three-winding converter transformer.
An intensive valve hall suitable for a large-capacity single-phase three-winding converter transformer comprises a first converter transformer, a second converter transformer, a third converter transformer, a first valve tower, a second valve tower and a third valve tower, wherein the first valve tower, the second valve tower and the third valve tower are positioned in a rectangular valve hall and are equidistantly distributed along the long side direction of the valve hall, the first converter transformer, the second converter transformer and the third converter transformer are distributed outside one side of the long side of the valve hall and respectively correspond to the first valve tower, the second valve tower and the third valve tower, the first converter transformer, the second converter transformer and the third converter transformer are respectively inserted into the valve hall through valve-side sleeves and respectively connect the first valve tower, the second valve tower and the third valve tower, and the first converter transformer, the second converter transformer and the third converter transformer are all single-phase three-winding transformers, the first valve tower, the second valve tower and the third valve tower are all suspension type quadruple valves.
As a preferable scheme of the utility model, the tops and the lowest parts of the first valve tower, the second valve tower and the third valve tower are respectively connected with a neutral bus pipe bus and a polar bus pipe bus, the neutral points of the first valve tower, the second valve tower and the third valve tower are connected with the neutral bus pipe bus through suspension insulators, the valve side sleeve comprises a first sleeve, a second sleeve, a third sleeve and a fourth sleeve, the upper six-pulse middle points of the first valve tower, the second valve tower and the third valve tower are connected with the first sleeve through a pipe bus, the second sleeve is connected with a neutral point connecting pipe bus on the Y side of the converter transformer through a second post insulator, the third sleeve is connected with the lower six-pulse middle points of the first valve tower, the second valve tower and the third valve tower through a first suspension insulator bearing pipe nut and a delta side connecting pipe nut.
In a preferred embodiment of the present invention, a C arrester is suspended between the neutral bus bar and the pole bus bar.
In a preferred embodiment of the present invention, the polar bus bar is connected to an polar current measuring device through a flexible conductor, the neutral bus bar is connected to a neutral current measuring device, and both the polar current measuring device and the neutral current measuring device are mounted in a suspended manner.
As a preferred scheme of the utility model, the polar bus tube bus is arranged by adopting ground support, and the neutral bus tube bus is installed by adopting a side wall insulator.
According to the preferable scheme of the utility model, a Y-side grounding switch, a delta-side grounding switch, a polar bus grounding switch and a neutral bus grounding switch are arranged on the side wall in the valve hall.
As a preferable aspect of the present invention, the valve hall is provided with a first direct current wall bushing and a second direct current wall bushing on the side of the direct current field, and the first direct current wall bushing and the second direct current wall bushing are inserted into the valve hall from the other side of the long side of the valve hall.
As a preferable aspect of the present invention, a patrol passage is provided in the valve hall on the side and above the first valve tower, the second valve tower, and the third valve tower, and the patrol passage is arranged in a C-shaped loop.
As a preferable aspect of the present invention, three phases on the converter valve sides of the first converter transformer, the second converter transformer, and the third converter transformer are simultaneously turned on and off, and 1 grounding switch is disposed in each of the three phases.
The utility model has the beneficial effects that:
compared with the prior art, the intensive valve hall suitable for the high-capacity single-phase three-winding converter transformer has the beneficial effects that:
1) the large-capacity single-phase three-winding converter transformer is adopted, the number of converter transformers in the station is optimized from 12 single-phase double-winding transformers to 6 single-phase three-winding transformers, 1 standby converter transformer is reduced, and equipment investment is effectively saved;
2) the valve hall grounding switch configuration scheme is optimized, three phases on the valve side of the converter transformer are considered to be started and stopped simultaneously, 1 grounding switch on the valve side of the converter transformer is reduced from 1 grounding switch on each phase to 1 grounding switch on the three phases, wiring is simplified, and investment is saved;
3) the layout scheme of the valve hall is optimized, a combination scheme of single-phase three-winding converter transformer and quadruple valves is adopted, the electrical process flow is smooth, the layout scheme is well suitable for the valve hall and the converter transformer area, and the occupied area of the valve hall is effectively saved by about 30-40%.
Drawings
Fig. 1 is a schematic plan layout structure of an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
In the description of the present invention, it is to be understood that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, either fixedly connected, detachably connected, or integrally connected, unless otherwise explicitly stated or limited; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it is to be further understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the machine or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
Referring to fig. 1, an intensive valve hall suitable for a large-capacity single-phase three-winding converter transformer according to an embodiment of the present invention includes a first converter transformer 6, a second converter transformer 7, a third converter transformer 8, and a first valve tower 3, a second valve tower 4, and a third valve tower 5 located in a rectangular valve hall, the first valve tower 3, the second valve tower 4, and the third valve tower 5 are equidistantly distributed along a long side direction of the valve hall, the first converter transformer 6, the second converter transformer 7, and the third converter transformer 8 are distributed outside a long side of the valve hall and respectively correspond to the first valve tower 3, the second valve tower 4, and the third valve tower 5, the first converter transformer 6, the second converter transformer 7, and the third converter transformer 8 are respectively inserted into the valve hall through valve-side bushings and respectively connect the first valve tower 3, the third valve tower 4, and the third valve tower 5, the first converter transformer 6, the second converter transformer 7 and the third converter transformer 8 are all single-phase three-winding transformers, and the first valve tower 3, the second valve tower 4 and the third valve tower 5 are all suspension-type quadruple valves, so that the three converter transformers are close to a valve hall and are inserted into the valve hall through a converter transformer valve side sleeve, so that occupied space of the valve hall area is saved, meanwhile, the suspension-type quadruple valves are matched with the upper space of the valve hall to reduce occupied space, and by adopting the combination scheme of the single-phase three-winding converter transformers and the quadruple valves, an electrical process flow is smooth, the arrangement of the valve hall and the converter transformer area is well adapted, and the occupied space of the valve hall is effectively saved by about 30-40%; therefore, by adopting the large-capacity single-phase three-winding converter transformer, 12 single-phase double-winding transformers in the conventional transformer substation can be optimized into 6 single-phase three-winding transformers, 1 standby converter transformer is reduced, and the equipment investment is effectively saved.
Referring to fig. 1, exemplarily, the top and the lowest portion of the first, second and third valve towers 3, 4 and 5 are respectively connected with a neutral bus bar 21 having a low voltage and a pole bus bar 20 having a DC500kV voltage, the neutral points of the first, second and third valve towers 3, 4 and 5 are connected with the neutral bus bar 21 through a suspension insulator 19, the valve-side bushings include a first bushing 25, a second bushing 26, a third bushing 27 and a fourth bushing 28, the upper six pulsating midpoints of the first, second and third valve towers 3, 4 and 5 are connected with the first bushing 25 through a pipe bus, the second bushing 26 is connected with a Y-side neutral point bus 22 of a converter through a second post insulator 17, and the first and second bushings 25 and 26 are star-connected as valve-side Y bushings, the third bushing 27 and the fourth bushing 28 are connected to each other at a point in the lower six pulses of the first valve tower 3, the second valve tower 4 and the third valve tower 5 by a first suspension insulator female socket 18 and a delta-side connecting female socket 23, and the third bushing 27 and the fourth bushing 28 are connected to each other at a point in the lower six pulses of the first valve tower 3, the second valve tower 4 and the third valve tower 5 by flexible wires, and the third bushing 27 and the fourth bushing 28 are connected to each other as a delta-side bushing by the first suspension insulator female socket 18 and the delta-side connecting female socket 23, thereby completing the corresponding Y and delta connections inside the valve hall, preferably, the Y-side and delta-side bushings of the converter transformer are arranged vertically, the first bushing 25 and the second bushing 26 are arranged at the lower portions of the first converter transformer 6, the second converter transformer 7 and the third converter transformer 8, and the third bushing 27 and the fourth bushing 28 are arranged at the upper portions of the first converter transformer 6, the second converter transformer 7 and the third converter transformer 8, the first sleeve 25 is connected to three valve towers through a hard pipe bus, the second sleeve 26 is connected with the neutral point connecting pipe bus 22 on the Y side of the converter transformer through the hard pipe bus, the second support insulator 17 is in short circuit, the third sleeve 27 and the fourth sleeve 28 on the delta side of the valve side sleeve of the three converter transformer are connected to the three valve towers through the first suspension insulator bearing pipe bus 18 and the flexible conductor, the sleeves are connected with each other through the first suspension insulator bearing pipe bus 18 and the delta side connecting pipe bus 23 in a bridging mode, the end part of the valve side sleeve of the converter transformer is connected with the valve towers through a vertically installed tubular bus, and the end part of the insulator is connected with the corresponding valve towers through the suspension insulator hardware.
Referring to fig. 1, for example, a C arrester 9 is suspended between the neutral bus bar 21 and the pole bus bar 20, and the arrester is arranged for protection and saves occupied space.
Referring to fig. 1, for example, the polar bus bar 20 is connected with an polar current measuring device 12 through a flexible conductor, the neutral bus bar 21 is connected with a neutral current measuring device 13, and both the polar current measuring device 12 and the neutral current measuring device 13 are installed in a suspension manner, so that the occupied area is saved, and the arrangement of the current measuring devices is realized.
Referring to fig. 1, the pole bus bar 20 is exemplarily arranged in a ground support manner, and the neutral bus bar 21 is installed by using a side wall insulator.
Referring to fig. 1, for example, a Y-side grounding switch 10, a Δ -side grounding switch 11, a pole bus grounding switch 14, and a neutral bus grounding switch 15 are arranged on a side wall in the valve hall, so that the occupied space is further saved, and the arrangement of the grounding switches is realized.
Referring to fig. 1, exemplarily, a first direct current wall bushing 1 of a polar bus and a second direct current wall bushing 2 of a neutral bus are respectively arranged at the side of the valve hall opening into the direct current field, the first direct current wall bushing 1 and the second direct current wall bushing 2 are inserted into the valve hall from the other side of the long side of the valve hall, the first direct current wall bushing 1 is installed in a tilted manner by 10 °, and the second direct current wall bushing 2 is installed horizontally.
Referring to fig. 1, illustratively, a patrol passage 24 is provided in the valve hall at the side and above the first valve tower 3, the second valve tower 4 and the third valve tower 5, the patrol passage 24 is arranged in a C-shaped surrounding manner, and a patrol walkway enters the valve hall from the control floor side, enters the valve hall along the short axis direction of the valve hall, gradually rises along the long axis direction, and goes up to the position below the valve hall roof truss and above the valve tower.
Referring to fig. 1, exemplarily, three phases on the converter valve sides of the first converter transformer 6, the second converter transformer 7 and the third converter transformer 8 are started and stopped simultaneously, and 1 grounding switch is configured for the three phases, so that the investment is further saved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides an intensive valve room suitable for single-phase three winding of large capacity changes current which characterized in that: comprises a first converter transformer, a second converter transformer, a third converter transformer, a first valve tower, a second valve tower and a third valve tower which are positioned in a rectangular valve hall, the first valve tower, the second valve tower and the third valve tower are distributed along the long side direction of the valve hall at equal intervals, the first converter transformer, the second converter transformer and the third converter transformer are distributed outside one side of the long edge of the valve hall and respectively correspond to the first valve tower, the second valve tower and the third valve tower, the first converter transformer, the second converter transformer and the third converter transformer are respectively inserted into the valve hall through valve side sleeves and are respectively connected with the first valve tower, the second valve tower and the third valve tower, the first converter transformer, the second converter transformer and the third converter transformer are all single-phase three-winding transformers, and the first valve tower, the second valve tower and the third valve tower are all suspension-type quadruple valves.
2. The intensive valve hall of claim 1, which is adapted to a high capacity single phase three winding converter transformer, characterized in that: the top and the lowest part of the first valve tower, the second valve tower and the third valve tower are respectively connected with a neutral bus tube bus and a pole bus tube bus, neutral points of the first valve tower, the second valve tower and the third valve tower are connected with the neutral bus tube bus through suspension insulators, valve side sleeves comprise a first sleeve, a second sleeve, a third sleeve and a fourth sleeve, upper six pulse middle points of the first valve tower, the second valve tower and the third valve tower are connected with the first sleeve through tube buses, the second sleeve is connected with a Y-side neutral point connecting tube bus through a second support insulator, and the third sleeve is connected with lower six pulse middle points of the first valve tower, the second valve tower and the third valve tower through a first suspension insulator bearing tube bus and a delta-side connecting tube bus.
3. The intensive valve hall of claim 2, which is suitable for a high-capacity single-phase three-winding converter transformer, and is characterized in that: and a C lightning arrester is hung between the neutral bus tube bus and the polar bus tube bus.
4. The intensive valve hall of claim 2, which is suitable for a high-capacity single-phase three-winding converter transformer, and is characterized in that: the polar bus tube bus is connected with an electrode current measuring device through a flexible conductor, the neutral bus tube bus is connected with a neutral current measuring device, and the electrode current measuring device and the neutral current measuring device are installed in a suspension mode.
5. The intensive valve hall of claim 2, which is suitable for a high-capacity single-phase three-winding converter transformer, and is characterized in that: the polar bus tube bus is arranged in a ground supporting mode, and the neutral bus tube bus is installed through a side wall insulator.
6. An intensive valve hall suitable for a high-capacity single-phase three-winding converter transformer according to any one of claims 1 to 5, wherein: and a Y-side grounding switch, a delta-side grounding switch, a polar bus grounding switch and a neutral bus grounding switch are arranged on the side wall in the valve hall.
7. An intensive valve hall suitable for a high-capacity single-phase three-winding converter transformer according to any one of claims 1 to 5, wherein: the valve hall is provided with a first direct current wall bushing and a second direct current wall bushing on the side of the direct current field, and the first direct current wall bushing and the second direct current wall bushing are inserted into the valve hall from the other side of the long edge of the valve hall.
8. An intensive valve hall suitable for a high-capacity single-phase three-winding converter transformer according to any one of claims 1 to 5, wherein: the valve hall is inside first valve tower the second valve tower with the side and the top of third valve tower are provided with the tour passageway, it is C type ring around arranging to tour the passageway.
9. An intensive valve hall suitable for a high-capacity single-phase three-winding converter transformer according to any one of claims 1 to 5, wherein: the three phases of the first converter transformer, the second converter transformer and the third converter transformer on the converter transformer valve side are started and stopped simultaneously, and 1 grounding switch is configured on the three phases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121945976.8U CN215897601U (en) | 2021-08-18 | 2021-08-18 | Intensive valve hall suitable for large-capacity single-phase three-winding converter transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121945976.8U CN215897601U (en) | 2021-08-18 | 2021-08-18 | Intensive valve hall suitable for large-capacity single-phase three-winding converter transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215897601U true CN215897601U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121945976.8U Active CN215897601U (en) | 2021-08-18 | 2021-08-18 | Intensive valve hall suitable for large-capacity single-phase three-winding converter transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215897601U (en) |
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2021
- 2021-08-18 CN CN202121945976.8U patent/CN215897601U/en active Active
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